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NEETBotanyCell - The Unit of Life

What is the main principle of cell theory?

Options

  1. AAll living organisms are composed of cells and products of cells
  2. BAll cells arise from the fusion of different cells
  3. CAll cells are created from non-living matter
  4. DAll cells arise from pre-existing cells

Correct answer

D. All cells arise from pre-existing cells

Step-by-step solution

Explanation : Rudolf Virchow (1855) first explained that cells divided and new cells are formed from pre-existing cells (Omnis cellula-e cellula). He modified the hypothesis of Schleiden and Schwann to give the cell theory a final shape.

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